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common: SPSCQueue: Notify after incrementing queue size.
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@ -46,9 +46,16 @@ public:
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ElementPtr* new_ptr = new ElementPtr();
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write_ptr->next.store(new_ptr, std::memory_order_release);
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write_ptr = new_ptr;
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cv.notify_one();
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++size;
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const size_t previous_size{size++};
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// Acquire the mutex and then immediately release it as a fence.
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// TODO(bunnei): This can be replaced with C++20 waitable atomics when properly supported.
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// See discussion on https://github.com/yuzu-emu/yuzu/pull/3173 for details.
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if (previous_size == 0) {
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std::lock_guard lock{cv_mutex};
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}
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cv.notify_one();
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}
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void Pop() {
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